You are viewing a plain text version of this content. The canonical link for it is here.

Posted to user@hbase.apache.org by schausson <sc...@softera.fr> on 2017/10/06 16:07:07 UTC

HBase region server logs in standalone mode

Hi,
I'm trying to proceed with performance tests (and to figure out what to tune
in my hbase configuration), and I found in HBase documentation the "Enabling
RPC-level logging" section, that suggests to activate RPC DEBUG logging to
better understand what's going on...It's worth saying that I use HBase in
standalone mode, which means that everything runs in a single JVM (master,
region server...) if I understood properly.
My problem is that the region server log just contains a few lines, ending
with "WARN  [main] regionserver.HRegionServerCommandLine: Not starting a
distinct region server because hbase.cluster.distributed is false", so I am
not able to find any "DEBUG" level logs because I technically have no more
logs for the region server...
Did I missed something ? Where should I look to find RPC logs ?
Thanks for your help
Sebastien



--
Sent from: http://apache-hbase.679495.n3.nabble.com/HBase-User-f4020416.html

Re: HBase region server logs in standalone mode

Posted by schausson <sc...@softera.fr>.

Thanks Ted, you're right 
So next question is : is it feasible/easy to configure HBase in pseudo
distributed mode on a single computer (8core, 32GB RAM) ? Does it requires
to "install" HDFS too or can I rely on local filesystem ? Iknow that
performance results won't be relevant compared to production environment,
but I also want to figure out exactly how HBase works before moving to more
complex environment...




--
Sent from: http://apache-hbase.679495.n3.nabble.com/HBase-User-f4020416.html

Re: HBase region server logs in standalone mode

Posted by Ted Yu <yu...@gmail.com>.

If you use a single JVM, there wouldn't be RPC (between the server
processes).

Bear in mind performance for standalone mode is not indicative of
performance for distributed cluster.

FYI

On Fri, Oct 6, 2017 at 9:07 AM, schausson <sc...@softera.fr> wrote:

> Hi,
> I'm trying to proceed with performance tests (and to figure out what to
> tune
> in my hbase configuration), and I found in HBase documentation the
> "Enabling
> RPC-level logging" section, that suggests to activate RPC DEBUG logging to
> better understand what's going on...It's worth saying that I use HBase in
> standalone mode, which means that everything runs in a single JVM (master,
> region server...) if I understood properly.
> My problem is that the region server log just contains a few lines, ending
> with "WARN  [main] regionserver.HRegionServerCommandLine: Not starting a
> distinct region server because hbase.cluster.distributed is false", so I am
> not able to find any "DEBUG" level logs because I technically have no more
> logs for the region server...
> Did I missed something ? Where should I look to find RPC logs ?
> Thanks for your help
> Sebastien
>
>
>
> --
> Sent from: http://apache-hbase.679495.n3.nabble.com/HBase-User-
> f4020416.html
>